US1176484A - Sheet-metal gate. - Google Patents

Description

A. H. UTIS.

SHEET METAL`GATE.

APPLICATION msn Aus.z.1915.

Patented Mar. 21,1916.

THE COLUMBIA PLANOGRAPH C0., WASHINGTON, D. C.

TED STA sra ARTHUR H. OTIS, 0F CLEVELAND, OHIO.

SHEET-METAL GATE.

Application filed August 7, 1915.

To all whom it may concern Be itrknown that I," ARTHUR I-I. Oris, a citizen of the United States of America, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Sheet- Metal Gates, of which the following is a specification.

My invention relates to improvements in sheet metal gates, and has for its object the provision of a reinforced gate which is both light and strong, and will be cheap to construct.

The embodiment of my invention, set forth herein, is a gate of the type preferably used with elevator shafts and mav be formed of one or more sheet metal stampings, suitably shaped and spot-weldedvto afford the necessary stiffness and reinforcement.

The details of construction may best be explained in connection with the accompanying sheet of drawings, wherein Figure l is a viewin front elevation of a gate embodying my invention. Fig. 2 is a cross sectional view thereof on line 2-2. Fig. 3 is an enlarged fragmentary section in a plane at right angles thereto on line 3-3..

F igs. 4 and 5 are additional fragmentary cross-sections on lines H and 5-5, respectively. Fig. 6 is an enlarged detail, partially broken away and in sections, showing the bottom corner construction, and Fig. 7 is a view in elevation upon a smaller scale, showing a gate formed from a single sheet metal stamping, after the manner illustrated in the foregoing figures.

Throughout the s'everal figures of the drawings, I have employed the same character of reference to indicate similar parts.

It will be understood that the features of construction are the same, whether the gate is formed from two symmetrical stampings as in Fig. 1, or from a single stamping, as in Fig. 7. In either case, 4the sheet metal blankis first cut to shape, and the spaces between the bars of the gate are slit at equi distant intervals, as along the dotted line Although the gate is integral, for convenience, we may refer to the side posts b, and the top and bottom strips c and fl; which latter are connected by the vertical bars e.

Referring to Figs. 2 and 3, it will be seen that the side post comprises a hollow member formed of two rectangularly folded sec- Specicaton of Letters Patent.

Patented Mar. 21, 1916.

Serial No.44,242.

tions of the metal b', b, the latter overlapping the inwardly bent section e of the adjacent open space in the gate. Similarly, the top and bottom strips are folded back to form the rectangular sections c', o and d', CZ, as indicated in Fig. 2, which also overlap the baclrwardly bent members e', integral Vwith the bars e. At the tops and bottomsrof said bars, the metal is stiifened by the connecting wings e, forced back at these points.

Preferably at the four corners of the gate, as at 7', the overlapping sections are spotwelded so as to stiffen the structure and pre vent itsdeformation. In addition, the posts may be reinforced by sections of channel form, g, which are welded into the bases of said posts. Moreover, for convenience of construction, said gate may be formed of two symmetrical right and left hand sections, as shown in Fig. l, which sections are connected by top and bottom members L, h', overlapping the said strips of the gate and centrally welded thereto. Indeed, each of the overlapping or abutting portions of the gate may be spot-welded at any and all points which are deemed desirable, in order further to strengthen and stifen the structure. However, this expense may be avoided unless the gate is subjected to more than ordinarily severe use.

With the construction described, the body or central portion of the gate comprises stiffened integral bars which are approximately U-shaped in cross-section and these bars may be disposed as closelv together as is desired or some of the metal may be cut away to afford larger openings. As long as sufficient strength is provided` however,

it is immaterial as to the exact form which` is assumed by the central portion of the gate.

The gate. as stated, may be constructed of one or of a pluralitv of stampings, suitably secured or welded together as convenience of manufacture mav dictate, and the reinforcements of channel form may be inserted within the hollow frame, at such points as reinforcement is found to be desirable. In the drawings I have shown. a verv simple construction, or constructions, which exhibit the principles of my invention` the features whereof. I wish to protect together with any known equivalents of form, shape or material.

Having now described the preferred ernbodiment of my invention, I claim as new and desire to secure by Letters Patent, the

following l. As a new article of manufacture, a sheet metal gate, comprising a sheet metal blank centrally slit at intervals with the body of the metal adjacent to the slits bent at right angles to the plane of the gate to form a series of reinforcing ribs throughout the body of the forth.

2. As a new article of manufacture, a sheet metal gate, comprising a sheet metal blank centrally slit at intervals with the body of the metal adjacent to the slits bent gate, substantially as set at right angles to the plane of the gate to metal slit throughout the central portion thereof, with the adjacent metal bent back to form-stifiening ribs and the exterior bor-V ders of the blank rectangularly bent throughout to for1n`th`e inclosing hollow frame for the gate; said members being Secured at .the cornersthereof, substantially as set forth. LAS a new article of manufacture, a sheet metal gate, formed from a blank of sheet metal, havingan integral frame bent twice yat kright angles along its bordering edges, to form"top,bottom and side rails of hollow form; the samebeing securedat the corners ofthe gate, substantially as set forth. 5,. As anew article of manufacture, a sheet metal gate, formed from a blank of sheet metal to provide apartiallyopen cena` tral: portion, andan inclosing Aframe bent twice at right angles along its bordering edges, and voverlapping at thercorners to form top, ybottom and side railstfor` the gate; thesame being securedv at the overlapping corners, substantially as set forth.V

In testimony whereof I donow aiiix my signature inthe presence of two witnesses. ARTHUR H. OTIS. TWitnesses: Y FRANK BUENA, j ALBERT LYNN LAWRENCE.

Copies of this patent may be obtained for five cents each, by. addressing the Commissioner of Patents.

Washington, D. C.

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